Here's an older community project that's moved along and now in use.
This is a ruby on rails based weekly planner.
With simplicity in mind, weekly planner lets you create labels (be that people, objects, events - whatever works for you). Once created you can assign those labels to blocks of time spread over.... a week. This is great for rotas, groups etc. and removes much of the bloat from a fully-fledged calendar app.
Printing, email reminders and uber drag-and-drop coming very soon.
